In the past, the Iranians could deny any involvement in terrorist acts because it was carried out by their proxies. If we are hit now, WE know and the WORLD knows it was the Iranians and there is no shield of plausible deniability that they can raise. This means the gloves will be off and all Hell will be unleashed on the Iranian leadership (i.e. regime change). This is why I feel their response will be muted. They need a way to save face, but any overt act that can and will be tied to them will be their demise and they know it. Do they have a death wish?
[This means the gloves will be off and all Hell will be unleashed on the Iranian leadership (i.e. regime change).]